求翻译：他的研究主要优点在于研究层次较高,有一定的系统性学术性较强。但其弱点是研究的覆盖面还不够广,基本上属于个案研究,因此无法对诗经英译历史的总体面貌做出宏观的描述。是什么意思？

The main advantage of his research is to study the higher level, there is some systematic academic stronger. But its weakness is the study of the coverage is broad enough, is essentially a case study, can not the English translation of the Book of Songs to make the overall appearance of the history

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His research main merit lies in the research level to be high, has certain systematic technicality to be strong.But its weakness is the research coverage insufficiently is also broad, basically belongs to the case research, therefore is unable to the poetry England to translate historical the overal

His research study on the main advantage of higher level, a certain systematic academic of strong. But its weakness is the study of the coverage is not wide enough, basically a case study, and therefore cannot be made to the overall look of the book history of the English translation of macro-descri

His research study on the main advantage of higher level, a certain systematic academic of strong. But its weakness is the study of the coverage is not wide enough, basically a case study, and therefore cannot be made to the overall look of the book history of the English translation of macro-descri